Machine for making vegetable paecement papee



(No Model.)Y y 5 sheets-sheet 11 (1,1?. LBONHARD, MACHINE FOR MAKING YEGETABLE PARCUZNTV PAPER.

No. 500,915. Patented July f1, 1893.

(No Model.) l V 5 Sheets-Sheet 2. G. T. .LEONH'ARR MACHINE FORMAKING VBGBTABLE PARGHMBNT PAPER. No. 500,915. l Patented July 4, 1893.

(No Model.) v .5 `Sheets-Sheet 3.

' --G. T. LBONHARD.

MAGHNE FOR MAKING VEGETABLE PARGHMENT PAPER. No. 500,915. Patented .July 4, 1893.

ATT ORNE Y6' (NokModeI.) 5 Sheets-Sheet 4.

G. T. LBONHARD MACHNE IER MAKING VBGETABLBPARCHMBNT PAPER.

No. 500,915. `Patented. July 4. 1893'.

(NoMpdel.)

G. T. LEONE-ARD.

5 Sheets-Sheet 5.

' MACHINE FOR MAKING VEGBTABLB VPJRGHlwBlvT PAPER.

Patented July 4, 1893.v

:IDEE U EECICIICICJEEECIE DE [IEDE TTURNE YS- UNTTED STATES PATENT EETCE.

GOTTLOB THEO. IIEONHARD, OF PATERSON, NEW JERSEY.

MACHINE FOR MAKING VEGETABLE PARCHMENT-PAPER.

SPECIFICATION forming part of Letters Patent No. 500,915, dated July 4, 1893.

Application filed October 5, 1892 To all whom it may concern:

Be it known that I, GoTrLoB THEODOEE LEONHARD, a citizen of the United States, residing at Paterson, county of Passaic, State of New Jersey, have invented certain new and useful Improvements in Machines for Making Vegetable Parchment-Paper, of which the following is a specification.

In some of the Ways of making vegetable parchment paper, the roll of paper to be treated is subjected to a series of distinct operations and is rewound after each operation. To particularize: The paper from the fresh roll is led into the acid bath, is then Washed and is rewound. The Washing operation is performed by passing the sheet through Water and over a series of horizontal rubbers it being subjected while passing over the rubbers to jets of water on its upper and lower surfaces. The washing is imperfectly performed, the weight of the Water on the upper side of the paper pressing the latter down and impeding the action of the underneath flushing jets. The roll is removed from this first machine to a second machine Where the Washing is made more complete, the paper being again Wound off the roll lthrough water and over horizontal flushing devices and the arrangement is such that the upper and lower surfaces of the paper are reversed in this second Washing. The paper is again rolled up in the second machine and may, if the paper be heavy, be removed to still another Washing machine Where the same operation is repeated. The paper roll is then transferred to a fourth machine and the paper is unwound through a neutralizer, such for instance, as dilute ammonia, is again washed and again wound up. The roll is then transferred to a fifth machine and more thoroughly Washed and rewound. The roll is then transferred to a sixth machine where it is unwound, passed through a gl ycerine bath and rewound thence it is transferred to the seventh and last machine Where it is dried and wound. The result of all this handling is a great loss of paper in wastage. Eachunwinding and rewinding involves the loss of some paper not only because some paper is destroyed in starting the roll each time but because each rewinding involves a slightly greater disloca- Seral No. 447,398. (No model.)

tion of the sheet so that by the'time the sheet has passed through the six preliminary ma chinos and is ready for the drier the ends of the roll are extremely irregular and much paper is consequently wasted in trimming. The loss of time in transferring paper, in

starting and 11e-starting so many machines and the necessary imperfection of the Work` where a number of different operations have" to be relied on are also important items of loss'.

The object of my present, invention is tp substitute for all of these machines, a single machine in which the paper is started from the fresh roll and passes, entirely Without intelligent intervention except to guard against accidental mishaps, through one step after another until it is rewound after being dried.

My invention further involves certain details of construction in such a machine which I will first fully describe with reference to the accompanying drawings and then point out in the claims.

In said drawings, Figure I is a side elevation, partially diagrammatic, of a machine illustrating my invention. Figs. II and III are sectional views on the line indicated at II-III (Fig. IV) of the machine to a larger scale, the two figures together showing the whole machine. Figs. IV and V are plan views on the same scale with Figs. II and III and similarly illustrating in sections the entire machine. Fig. VI is a detail perspective view illustrating the method of attaching the paper web to the endless chains or belts when starting the paper through the machine. Fig. VII is a sectional detail view illustrating the support of a paper roller.

l may represent a roll of paper mounted by the bar 2 in suitable hangers 3 carried by the standards 4 which are mounted at one end of the frame 5 of the machine.

6 is an acid bath tank usually of approximately V form as shown. The paper 7 from roll l passes over a glass rod or tube S which is mounted in seats 9 on the frame 5. The paper then enters the acid in tank 6 and passes down around a second glass rod or tube 10 which is supported by hangers ll suspended by straps 13 the upper ends of which are wound on a drum let. The drum 14; may be turned by the Wheel 15 and ropes IOO 16 when it is desired to raise the glass depressing rod 10 from the acid to enable the paper web to be started through the machine.

It is necessary to cool the acid artiiicially; to this end, I employ any usual form of refrigerating machine having means for forced circulation of the refrigerating lmaterial Whether it be cold water, brine or ammonia.

The construction of the refrigerating machine being immaterial, I have not thoughtit worth while to represent it and have merely indicated diagrammatically in Fig. I a cylinder 17 which may represent the brine tank of a system in which a refrigerating effect is obtained by a forced circulation of brine.

From

the refrigerating machine, a pipe 18 leads to' a point adjacent to the paper treating machine or machines and it may be branched to any extent to supply any desired number ofy machines.

19 is the acid supply tank and 2O .the acid:

cooling tank. The pipe 21 from the main brine supply pipe 18 has a branch 22 whichconnects with brine-coil 23 placed inside of the cooler 20. The lower end of said coildis-J charges into the -branch pipe 24 which is conl nected .to the return pipe 25 of the brine tank; 17. The pipe 21 is also connected -by pipe 26. with a brine coil 27 preferably arranged within and close to the bottom of theacid bath and 4from said coil a branch pipe 28 leads to the brine return pipe 25 and so back to `the brine tank of the refrigerating machine.

acid from supply tank 19 iiows by pipe 29 to the acid cooler 2O lwhere its temperature is'1 reduced by the brine coil 23 and it flows out through pipe 3() into the acid bath 6 with;y From the rapidity regulated by the cock 31.

acid bath 6 the paper is led to the acid re-i claiming tank 32 which is filled with fresh;

water whenever a new roll of paper is started.

The paper issuing from the acid `bath 6 hoW- ever first passes between glass Scrapers 33, f 34 and over the glass rods or tubes 35, 36 so:` that a large part of the acid adhering to the g paper is removed.

The paper then passes? down into the water of a tank 40 ysaid tank being kept filled with water which flows from the ushing devices above and which is al-v lowed to run off between the walls 41 and escape by pipe 42. The paper passes under the roller 43 which may be mounted adjustkably by brackets 44 on the sides of the water tank 40. It then passes up on opposite sides of two scouring cylinders 45 which may have vthcirsurfaces covered by some coarse fabric and may be turned from time to time topresent a fresh scouring surface.

On opposite sides of the web of paper on vertical standard pipes 46 are arranged two series of horizontal water pipes 47 which have a series of holes on theirinner sides and which are connected by the vertical pipes 46 to a common water supply pipe 49. From the water pipes 47 jets of water are thrown constantly against the opposite faces of the paper web as it travels vertically from the roller 43 to the roller 50 and co-act with the scouring cylinders 45 in removing the acid from the paper. The paper web at this part of the operation is vertical or substantially so and the flushing op- .into the neutralizing liquid contained in the tank 57. The rollers 58 guide the paper' through the neutralizing bath `and it then passes around the roller 59 and intothe washing tank 60, aroundfa roller 6l, up between flushing pipes V62 and scouring cylinders 63 and over the roller 64. Here a scraper G5 may remove the excess of waterand .thepaper web may ypass directly to the drier or into the tank 66 for liquid (usually glycerine) for softening and adding weight to the paper. The rollers 67 keep the paper down `in the glycerine as it Vpasses through thetank-G on its way tothe roller 68. Passing around-the vroller 68 the paper may be wound on the roller 69, or the said roller 69 may be simply a squeeze rollerover -which the paper is led on the way to the drier or a series of-driers. The drier may be ofany desired construction. I have here villustrated the 'passing of Ithe :pa-

,per web around a large drying cylinder 70 between the 4pressing and calendering rollers 71 and on to the bar 72 where'therollis finally rewound.

The drier and the rest of the machine may have the same lor separate driving `mechanism. I have vhere supposed the drier to Vbe yoperated separately and have shownabelt 73 driven from the counter shaft 74 and operating the pulley 75 on the shaft and trunnion of roller 68 so that the roller 68 is utilized to draw the paper web through the machine.

I find in practice that it is desirable to ease somewhat the strain upon the paper not relying upon the paper web entirely-for the drawing of the paper through the machine. To this end I mount on the shaft or trunnion'of the roller 68 on the opposite side of themachine from the pulley 75 a second pulley 76 which drives an endless belt 77. This belt runs over pulleys 78 carried by the shafts or trunnions of the rollers 55 and 64 and bears IOO IIO

IZO

ISO

on them with sufficient pressure to slightly ease the movement of the paper or rather preferably with just sufficient pressure to relieve the paper from the strain caused by the weight of the rollers. around the idle pulleys 79.

For starting the paper web, I Vemploy the following mechanism: 80, S0 are chains or belts arranged one at each side of the machine and traveling immediately Within the vertical Water standards 46. The chains are endless and are mounted on a series of idle sprockets Sl each mounted on the trunnion or shaft S4 (see Fig. VII) of a paper roll, but traveling entirely free. The driving sprocket wheel 82 is carried by the shaft of roller 68. The upper part of the chains is carried by the idle sprocket Wheels 83. The end of a paper web 7 is wound or otherwise iixed on a bar or stick 85 when a roll is to be started and hooks 86 at both ends of the bar or stick 85 are caught into the chains or belts SO, 8O in the manner shown in Fig. VI. To do this the glass depressing rod 10 lis iirst lifted from the acid bath, the paper pulled off of the roll and passed under said rod and over the path indicated in Fig. II through the acid reclaim# ing tank 32 (which at that time is lled with pure Water) and into the water tank 40. I-Icre the stick 85 is connected to the chains as described and the machinery being started,the chain driving sprocket wheel 82 draws the chains and thev attached web of paper through the machine causing them to follow the path already described. When the stick 85 reaches the rollers 68, 69, it isremoved and the paper is drawn throughl by its friction upon the said rollers assisted only by the belt 77 as already described.

The belt 77 is then led- It will be seen that in this machine the pa` facid cooling tank 20 having means of connection with an acid supply tank, the coil 23 in said acid cooling tank 2O and arranged in connection with the pipes I8 and 25 and means for supplying the cooled acid from the tank 2O to the tank 6, substantially asshown and described.

2. The combination in a single machine of devices for treating a roll of paper with acid and Washing and neutralizingthe acid,rollers for guiding the paper through the machine continuously, means for drawing the paper through the machine at one end and endless chains or belts and means for connecting the paper positively with said chains or belts, substantially as set forth.

3. The combination of chains or belts 80, with a bar 85, for attachment to apaper strip, and means for detachably connecting said bar with said chains or belts, substantially as described.

e. Trino. LEoNHARD.

Witnesses:

HARRY E. KNIGHT, M. V. BrDeooD. 

